1N3157-1/TR

Overview

The 1N3157-1/TR is a temperature-compensated Zener reference diode manufactured by Microchip Technology. It features a nominal Zener voltage of 8.4 V with a tolerance of ±5%. The device operates in the 8 V to 8.8 V range and has a maximum DC power dissipation of 500 mW at +50°C. Electrical characteristics include a test current of 10 mA, a maximum reverse leakage current of 10 µA at 25°C and 5.5 Vdc, and a Zener impedance of 15 Ohms. It utilizes a DO-7 (DO-204AA) through-hole package.

Feature Summary

• Temperature compensated design for stable voltage reference applications
• Metallurgically bonded double plug construction
• Silicon diode element material

Applications

• Off-the-shelf temperature compensation circuits
• Precision voltage reference systems
• Military and aerospace electronic assemblies

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm exact tolerance and packaging variations. Confirm RoHS compliance status as it varies by production batch and revision. Ensure the ordering part number matches the required military or commercial grade specifications before procurement.

Selection Notes

Select this component when a stable 8.4 V reference with low temperature drift is required. The DO-7 package suits through-hole designs. Verify that the 500 mW power rating meets thermal requirements. Check if tighter tolerance variants like JANTXV are needed for higher precision needs.

Part Context

This part belongs to the 1N3157 series of temperature-compensated Zener diodes. It shares functional similarities with CDLL3157 but differs in package type. The series is designed for high-reliability applications requiring consistent voltage regulation over wide temperature ranges.

Replacement Considerations

JANTXV1N3157-1 offers tighter voltage tolerance. CDLL3157 provides a leadless surface-mount alternative. Verify pinout compatibility and thermal performance when substituting.